JDK 9 RFR of 8044715: Add finally lint warning to build of jdk repository

[Joe Darcy]

Hello,

I've started looking at clearing the javac "finally" lint category from 
the JDK sources. Once that is done, please review the corresponding 
makefile change to enable the warning the build:

diff -r cb15bc14c26a make/Setup.gmk
--- a/make/Setup.gmk    Mon Jun 02 19:49:57 2014 +0400
+++ b/make/Setup.gmk    Tue Jun 03 11:06:19 2014 -0700
@@ -27,7 +27,7 @@

  # To build with all warnings enabled, do the following:
  # make JAVAC_WARNINGS="-Xlint:all -Xmaxwarns 10000"
-JAVAC_WARNINGS := 
-Xlint:-unchecked,-deprecation,-overrides,auxiliaryclass,cast,classfile,dep-ann,divzero,empty,fallthrough,overloads,serial,static,try,varargs 
-Werror
+JAVAC_WARNINGS := 
-Xlint:-unchecked,-deprecation,-overrides,auxiliaryclass,cast,classfile,dep-ann,divzero,empty,fallthrough,finally,overloads,serial,static,try,varargs 
-Werror

  # Any java code executed during a JDK build to build other parts of 
the JDK must be
  # executed by the bootstrap JDK (probably with -Xbootclasspath/p: ) 
and for this

Thanks,

-Joe